Was able to fondle one of these today. Castle nut is not properly staked, neither was the gas-key. That being said, the ambi safety, mag release and bolt release are pretty slick. Handguards seem cheap, plastic only without metal heat shields, or so it appeared. Flash hider is kinda funky looking, IMOHO.

I heard that there aren't many of these out yet. Anyone have a number? A colleague fell prey to black rifle disease which now has him into a 15-22 and this 10. I'm sure he'll cave for a M&P-15 very soon...